Page 288 - HVAC Pump Handbook

Rishel_CH10.qxd 21/4/06 6:20 PM Page 285

Basics of Pump Application for HVAC Systems

kw input 3.0 4.8 8.1 13.3 21.3 9.2 12.7 17.5 23.7 31.7 42.3 55.0 70.8

Wire shaft effy, % 56.4 70.5 75.4 82.4 87.5 66.3 73.4 78.0 82.9 86.5 88.4 90.6 91.8

Pump BHP HP 2.3 4.5 8.2 14.7 25.0 8.2 12.5 18.3 26.4 36.8 50.2 66.9 87.1

Pump speed RPM 729 829 1001 1188 1401 855 947 1065 1193 1322 1466 1610 1760

Pump speed % 41.4 47.1 56.9 67.5 79.6 48.6 53.8 60.5 67.8 75.1 83.3 91.5 100

Pump effy, % 70 84 85.5 80 74 77.5 82.5 85.5 86.3 87.1 87.2 87.1 87

Equiv. flow Q 1 724 1273 1583 1778 1884 1852 2229 2478 2655 2795 2880 2950 —

Equiv. head h 1 124 112 95 85 44 122 117 113 109 107 104 102 100

Q 2 h 2 2 4225 14,458 26,384 37,209 46,107 28,128 42,477 54,348 64,670 73,013 79,778 85,362 —

Total head, ft h 2 21.3 24.9 30.7 38.7 48.8 28.0 33.9 41.4 50.1 60.4 72.2 85.4 100
Pump Performance Calculations Fitting System loss head, ft ft 0.4 0.9 1.6 3.3 3.6 7.1 6.4 12.3 10.0 18.8 0.9 7.1 1.6 12.3 2.5 18.9 3.6 26.5 4.9 35.5 6.4 45.8 8.1 57.3 10.0 70

10.1 System flow GPM Qe 300 600 900 1200 1500 900 1200 1500 1800 2100 2400 2700 3000
TABLE No pump run 1 1 1 1 1 2 2 2 2 2 2 2 2

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